Trouble with collapsing / uncollapsing parameters

[Richard Rosenman]

Hi gang;

I am having trouble with trying to keep my parameters uncollapsed (closed). I will do my best to explain the problem

I have a dropdown that allows you to select an option:

AEFX_CLR_STRUCT(def);
def.flags = PF_ParamFlag_SUPERVISE;
PF_ADD_POPUP( "Option", 
4,
1,
"Option 1|Option 2|Option 3|Option 4",
OPTION_DISK_ID);

Then in the UpdateParameterUI function, I check to see which option has been selected. If Option 1 has been selected, I disable a parameter. Otherwise, I enable it. The angle parameter is also supervised in the ParamsSetup function.

if (params[OPTION_DISK]->u.pd.value == 1) 
{
params[ANGLE_DISK]->ui_flags |= PF_PUI_DISABLED; 
params[ANGLE_DISK]->flags |= PF_ParamFlag_COLLAPSE_TWIRLY;

}
else
{
params[ANGLE_DISK]->ui_flags &= ~PF_PUI_DISABLED; 
params[ANGLE_DISK]->flags |= PF_ParamFlag_COLLAPSE_TWIRLY;

}

I also have the collapse_twirly flag to keep it closed no matter which option is selected because I don't want it to automatically pop open.

Finally, I update the parameter:

AEGP_SuiteHandler		suites(in_data->pica_basicP);

ERR(suites.ParamUtilsSuite3()->PF_UpdateParamUI(in_data->effect_ref, 
															ANGLE_DISK,
															params[ANGLE_DISK]));

Now, my problem using this code is that if I collapse (open) the ANGLE parameter and try ot adjust the slider, it immediately closes. I think this is because I've added the PF_ParamFlag_COLLAPSE_TWIRLY. However, if I don't, the parameter will automatically collapse (open) when I select an option from the dropdox.

I realize it's difficult to explain this. But what I want to do, is make a selection from the option dropdown parameter, which will enable the angle parameter, but NOT have the angle parameter collapse (open) unless the user opens it.. 

What am I doing wrong?

-Rich

[shachar carmi]

you can hide and unhide the param using AEGP_SetDynamicStreamFlag(). when hidden and the unhidden, the param should revert to it's default twirl state. perahps that would give you a more stable starting point for the twirling process.